search query: @author Sommer, H. / total: 2
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| title | year | author | ||
| 2. |
Marketing Journal
1980 : VOL. 13:4, p. 354-357 |
1980 | Sommer, H. |
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| title | year | author | ||
| 2. |
Marketing Journal
1980 : VOL. 13:4, p. 354-357 |
1980 | Sommer, H. |